Whipstock



July 7, 1931. F. KINZBACH ET AL WHIPSTOCK m M M Filed Feb. 15, 1928' meme July'7, 1931 1 UNITED STATES PATENT; OFFICE FRANK xmzmcn, or Housman, AND HAIW'E m. wnrmrm, or 311mm, rams wmrs'rocx Application filed February 13, 1928. Serial No. 253,886.

,This invention relates to new and useful improvements in a whip stock. a

One object of the invention is to provide a whip stock of the character described, equipped with means for locating and fixing the same at any desired point in a pipe, to be perforated and side tracked, in a well bore.

Another object of the invention is to provide, in a whip stock, means normally held in inactive position, while the whip stock is being lowered in a pipe, but which may be actuated into active position, and when in said active position will anchor the whip stock section, of the whip stock located in the pipe to be perforated, andshowing its lower end broken away. I v

' Figure 2 shows a side elevation, partly in section, of the lower end, or support, of the whip stock showing the anchoring means in inactive position.

Figure 3 shows a vertical sectional view of the lower end, orsupport, of the whip stock showing the anchoring means in active position.

Figure 4 shows a fragmentary side view of the J-tool used for lowering and anchoring the whipi stock in the pipe.

Figure 5 shows a cross sectional view taken on the line 5'-5 of Figure 1. i Figure-6 shows a cross sectional view taken on the line 66 of Figure 2, and

Figure 7 shows a cross sectional view taken on the line 7-7 of Figure 3.

Referring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures, the numeral 1 designates a pipe set in a well bore.

In drilling wells it sometimes becomes impossible to continue drilling down through and beneath the pipe, for various reasons, and

in such case itcis common practise to perforate the Wall of the pipe, with a milling tool, and side track the lower end of the bore. In order to perforate said pipe it is necessary to locate a whip. stock in the pipe against which the milling tool works and by which it is forced against and through one side of the pipe. In order to locate the Whip stock at the desired place in the pipe it is customary to attach the whip stock to the upper end of a string of pipe of the required length and then let said string down into the bore until it rests on bottom, with the whip stock attached to the upper end thereof. The whip stock herein described is equipped with means for anchoring it to the pipe to be perforated at any selected place. The numeral 2 designates the lower cylindrical end, or support, of the whip I stock proper and which has a declining slot 3 therethrough whose upper end is narrowed laterally but widened upwardly, forming a recess 4. Fitted into the slot 3 there is a bifurcated', slidable, anchor 5, between the fingers 6, 6 of which one end of the dog 7 is pivoted, the free end of said dog extending beyond the ends of the fingers. There is a coil spring 8 in a socket 9 in the inner face of the upwardly widened recess 4. The inner end of this spring is attached to the end 2 of the whipstock and its other end is attached 1 to said dog and said spring holds said dog against, and in engagement with, theinner side of the pipe 1 as hereafter explained.

Beneath the slot 3 thelower end 2 has a vertical downwardly widened bearing 10 in which a correspondingly shaped anchor wedge 11 is located. Beneath the bearing 10 the lower end of the whipstock has a vertical bore 12 whose lower end is closed by a screw plug 13 on which is mounted a coilspring 1 1.

Attached to the lower end of the wedge 11 and depending into the bore there is a rod 15 .whose lower end has an enlarged head 16 enga ed to hold said Wedge down in inactive position, with the spring 14: under compression.

i a certain degree, to a crooked pipe. This upper end 18 is tapered upwardly, or wedge shaped, thus presenting a.sloping face 19, to

' the milling tool, said sloping face being concaved from end to end. v

This face 19 has a projecting stud bolt 20 and in order to let the whip stock down into the pipe 1 this-stud bolt is engaged in an inverted J-slot 21, cut in the lower end of the to disengage it from the stud bolt 20 and then b lifted out.

tubing 22, and the complete device may then be let down to the desired place. Before lowering the implement the upper end of the wedge 11 should be engaged with the shoulders 17 in order to hold said wedge in its lower and inner position out of engagement with the pipe, 1. As the implement is lowered the free end of the dog 7 will ride against the inner side of the pipe 1, and in turn said dog will hold the anchor 5 in position so that the shoulders 17 will remain in engagement with the upper end of the wedge 11. When the selected place,'to anchor the whip stock, has been reached, the tubing 21, may be elevated, carrying the Whip stock and whip stock support with it, until the free end of the dog 7 engages in the joint. above connecting sections of the pipe 1, as shown in Figure 3, and a further upward pull will operate, through said dog, to force the anchor 5 downwardly along the slot 3 and thus disengage the shoulders 17 from the wedge 11 and thereupon the spring 14 will force said wedge upwardly and outwardly into engagement with the pipe 1 and the whip stock will be thereby anchored in said pipe.

The tubing 22 may then be suitably turned A. milling tool may then be lowered into the pipe 1 until it wedges between the face 19 and the opposing wall of the pipe 1 and then rotated until the said pipe is perforated and an opening thus provided through which the grilling tool may work for side tracking the ore.

In anchoring the whip stock in the pipe to be perforated it will be anchored relative to a collar, or coupling, which connects sections of said pipe in such position that the sloping face. 19 will be between the pipe couplings and the pipe will then be perforated between couplings and before the milling cutter reaches a coupling beneath so that it will not be necessary to mill through a' coupling in,

making the desired perforation.

While we have shown what we now considerth'e preferred form of the invention it is obvious that mechanical changes may be madetherein and equivalents substituted for the parts shown and we reserve the right to make such structural changes as may be found desirable and as may be comprehended within the scope of the appended claims.

What we claim is 1. The combination with a whip stock having a sloping face and adapted to be inserted into a pipe in a well bore and having spaced inside abutments, of means adapted to engage the pipe to anchor the whip stock against downward movement in the pipe, means for holding said pipe engaging means in inactive, or non-pipe engaging position and' releasable through one of said abutments upon upward movement of the whip stock to permit said pipe engaging means to engage the pipe.

2. The combination with a whip stock, adapted to be inserted into a pipe in awell bore having spaced inside abutments, of means adapted to engage the pipeto anchor 3. The combination with a whip stock having a sloping face and adapted to be inserted into a pipe in a well bore, of means adapted to engage the pipe to anchor the whipstock against downward movement in the pipe, said means including a pipe engaging member and a yieldable means normally tending to hold said member in active position, in engagement with said pipe in position to locate said face in position between the ends of a section of the pipe.

4. The combination with a whip stock adapted to be inserted into a pipe in a well anchor the whipstock against downward movement in the pipe, said means including a pipe engaging member and a yieldable means normally tending to hold said member in active position, in engagement with said pipe, means for locking said member in inactive position, out of engagement with the pipe, while the whip stock is being lowered, and means effective to release said locking means, upon upward movement of the whipstock, to permit said member to engagesaid pipe." 5

5, In a whip stock adapted to be let down into a sectional pipe in a well bore, a pipe engaging member normally in inactive position out of engagement with the pipe and movable into active positionto' engage the pipe, means normally tending to inove said member into said active position, releasable locking means adapted to engage with, and hold, said member in said inactive position ore, of means adapted to engage the pipe to the whip stock against downward movement 11c us and means engageable with an end of 9. pi e stock in the pipe,and eflective to release said locking means.

6. In a whip stock adapted to be let down into a pipe in a well bore, a pipe engaging member normally in inactive position out of engagement with the pipe, but movable into active position to engage the pipe, means normally tending to move said member into said active position, releasable locking means adapted to engage with, and hold said member in said inactive position, said interlocking means being characterized by the provision of a dog adapted to engage the pipe, and

effective to release said interlocking means,

upon upward movement of the whip stock in the pipe.

,7. In a whip stock a support having a downwardly flared bearing, a wedge shaped member in said bearing, a yieldable seat on which said member is seated, a locking device adapted to engage said member and hold g it in position to compress said seat, and means ried by the anchor and engageable with said member and effective to hold said member in said lower position, and means normally tending to move said member into said upper position.

9. In a whip stock having a sloping faceand formed to be inserted into a pipe having sections connected by oints, a pipe engaging device movable into active position to lock the whip stock against downward movement in the pipe and normally in inactive position out of engagement with the pipe, releasable means normally holding said locking means in said inactive position and means effective to release said releasable means upon upward movement of the whip stock in the pipe when said sloping face is located in position between the ends of a pipe section.

10. A whip stock adapted to be inserted in a pipe composed of sections and including means engageable with the inside of said pipe and effective to lock the whipstock against downward movement in thepipe and means engageable in a joint between the pipe sections and effective to cause the action of said Elocking means to so look said whip stock with the sloping face of the whip stock spaced a pre-determined distance from the end of a section of said pipe.

11. The combination with a pipe in a well bore, of a whip stock having a sloping face at its upper end and including a pipe engaging member movable into active position to engage said pipe and normally in inactive position out of such engagement, releasable means for holding said member in saidinactive position, means engageable with the inside sections of said pipe and effective to release said releasable holding means, upon movement of the whip stock in one direction in the pipe, to permit said member to move into said active position.

\ 12. The combination with a jointed pipe in a well bore, of a whip stock having a sloping face at its upper end and including a pipe engaging member movable into active position to engage said pipe and normally in inactive position out of such engagement, releasable means for holding said member in said inactive position, means engageable in' a joint connecting sections of said pipe and effective to release said releasable holding means, upon movement of the whip stock in one direction in the pipe, to permit said member to move into said active position, said releasing means being located to effect such release while said sloping face is between joints of said pipe.

13. The combination with a pipe composed of jointed sections in a well bore, of a device therein for deflecting a milling tool working in the pipe, said device including a support, anchoring means carried thereby normally in inactive position out of engagement with the pipe, means engageable in a joint of said pipe and operative to effect the engagement of said anchoring means with the pipe to anchor the support in the pipe, and a deflector having a sloping face sustained by said support.

14. The combination with a pipe in a well bore, of a support for a milling tool deflector insertable into the pipe, anchoring means associated with said support and movable into active position to engage the pipe and normally in inactive position out of such ongagement, and means engageable with the pipe, upon movement of said support in the pipe, and operative to thereby bring about the movement of said anchoring means into said active position.

15. The combination with a dpipe in a Well having j oints bore and formed of sections an between said sections, of a deflector in said pipe, means movable into active position into engagement with the pipe to anchor the deflector therein, said means being normally in inactive position out of such engagement, and means engageable in a joint of the pipe and operative to effect the movement of said anchoring means into said active position.

16. An implement of the character described including a support insertable into a pipe in a well bore and having an anchoring means movable into active position into engagement with the pipe and normally in inactive position, and means engageable with the inside of said pipe, upon longitudinal movement of the support relative to the pipe, and operative to effect the engagement of said anchoring means with said pipe.

' B 17 An implement of the character de scribed, comprising a deflector insertable into a jointed pipe and having a sloping face, anchoring means associated with said deflector and movable into active position into 30 engagement with the pipe and normally in inactive position, and means engageable in a selected joint of the pipe, upon a given movement of said implement, relative to the pipe, andoperative to efi'ect the engagement of said anchoring means with the pipe.

18. The combination with a jointedpipe, of a whip stock having alocking means associated therewith "and means associated with the whip stock and adapted to engage in a I 20 joint of the .pipe to cause said locking means to lock said whip stock in said pipe. j 19. The combination witha jointed pipe, of a whip stock having a pipe engaging slip associatedtherewith and means adapted to en- 5 gage in a selected joint of the pipe to cause said slip to engage thepipe and lock said whipstock in said pipe.

20. The combination with a jointed pipe, of a whip stock having a locking means ass0- ciated therewith, means associated with. the

v whipstock and adapted to be inserted in any selected joint of said pipe and eifective to cause said locking means to lock said whipstock in the pipe, said whipstoclr having a as sloping deflecting face spaced from said locking means.

21. An implement of the character described, comprising a deflector insertable into a pipe and having a sloping face, anchor- 40 ing means associated with said deflector and movable into active position into engagement with the pipe'and normally in inactive posi tion and means engageable with the inside of said pipe, upon a given movement of said implement relative to the pipe, and operative upon such engagement with said pipe to effect the engagement of said anchoring means with the pipe. I I l I In testimony whereof we have signed our names to this specification.

. FRANK KINZBACH.

' HARVE M. WHEELER. 

